surge arrester
nounUK /ˈsɜːdʒ əˈrɛstə/
US /ˈsɜːrdʒ əˈrɛstər/
A device that keeps too much electricity from hurting things.
The surge arrester protected the computer when lightning struck the power line.
RELATED WORDS
OTHER MEANINGS
2. A device that stops sudden spikes of electricity from damaging equipment.
Engineers installed a surge arrester on the transformer.
3. A protective component used in power systems to divert excess voltage to the ground.
The surge arrester diverted the lightning surge safely to earth.
4. A safety device that limits voltage during a power surge.
Check the surge arrester after a storm to make sure it still works.